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Musya8 [376]
2 years ago
14

Scientists have discovered that the inner core of Earth is a solid while the outer core is a liquid. What is the cause of this o

bservation? what answer is it
Biology
1 answer:
Arte-miy333 [17]2 years ago
5 0

Answer:

Scientists figured out that the outer core must be liquid because S waves do not pass through it, but P waves do. The behavior of P and S waves also indicates that the inner core is solid. The speed of seismic waves also depends on the density of the material through which they are traveling.

Explanation:

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Geologists, more specifically mineralogists, identify minerals based on ________. A. Optical properties. B. Solid properties. C.
Shkiper50 [21]

The minerals are mostly characterized by the <u>Physical</u><u> </u><u>properties</u><u> </u><u>(</u><u>D</u><u>)</u> which includes the hardness, lustre, density etc. The mineralogists check the detailed view of minerals by using high powered microscope.

The minerals are chemical compounds which are formed as a result of physical processes or geological processes. They mostly occur in crystalline form. <u>For Example:</u> Cacite, Sulfur, Quartz etc.

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5 0
4 years ago
If a small droplet of ordinary fat molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particu
kolbaska11 [484]

Answer:

Option 1, a charged end and a noncharged end

Explanation:

Complete question

If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____

  1.  a charged end and a noncharged end
  2.  three fatty acid molecules, all pointing in different directions
  3.  two fatty acid molecules pointing in different directions
  4.  both a saturated fatty acid and an unsaturated fatty acid
  5.  two charged ends

Solution

The structure of phospholipids consists of the following groups and molecules –  

a) A glycerol molecule  

b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature

c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.  

When the phospholipids are placed in  water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.

Hence, option 1 is correct

3 0
4 years ago
ants and aphids often live near each other. the ants feed on the wastes produced by the aphids and the aphids are protected from
Papessa [141]

The ant and aphids have mutualism type of relationship because they both profit from one another. The aphids are protected while the ant is fed.

<h3>What is Mutualism?</h3>
  • Mutualism is a partnership in which both species participate and gain from it.
  • In this instance, ants profit because they eat the waste products left behind by aphids, while aphids profit because ants guard them.
  • An illustration of a mutualistic relationship is the one between an animal called an oxpecker and a rhinoceros or zebra.
  • The spider crab continues to be hidden from predators.
  • Bees with flowers - Another mutualistic link exists between bees and flowers.
  • Bees move between flowers to collect the nectar they require to produce honey.
  • Pollination occurs when the bee transfers pollen from one plant to another.

Learn more about Mutualism here:

brainly.com/question/9557750

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3 0
2 years ago
When water freezes, it (expads ,contracts)?
stiv31 [10]
It contracts hope that helps
8 0
3 years ago
To test a hypothesis, a scientist designs a(n)______
charle [14.2K]
  experiment, in the scientific method the hypothesis is tested through experimentation and if confirmed is called a theory.
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